You can make an overall risk assessment for a specific hazard based on the nominated set of control measures. As stated above, IMO yr specific hazard is not yet defined, eg it is unclear as to what likely injury will be caused by "Mud".

Hi Mohan, I think your micron filter is your ccp and the other checks are prerequisites if the hazard is foreign bodies then the micron filter is the last point the water will go through before being bottled. There are some good water haccp plans on the forums as a guide just search water and haccp.

Although you mention a physical contamination (foreign material - stones, etc.), the control for the activities you mention are different.

The control of your micron filtration system is not exactly the same that you do with the control of contamination from a vendor. Therefore you have separate risk assessments for these activities.

Your risk assessment should be: identify activity, identify the associated risks, then identify the controls. Your description seems to have it backwards: identify the risk and then identify all the activities that have this risk.